What is the cash conversion cycle?
Between paying your suppliers and getting paid by customers, your cash sits locked inside the business. The cash conversion cycle measures exactly how long — and how much cash that traps.
Skip the math — the free cash conversion cycle calculator runs this from your own figures.
Open the free calculator →The idea: how long cash is trapped
The cash conversion cycle (CCC) is the number of days between when you pay out cash for inventory and when you collect cash from selling it. During that window, your money is tied up funding operations rather than sitting in your account.
The shorter the cycle, the faster your cash comes back and the less working capital you need to run the business. A long cycle can force even a profitable company to borrow just to cover the gap.
The three components
CCC is built from three numbers. Days sales outstanding (DSO) is how long customers take to pay you. Days inventory outstanding (DIO) is how long stock sits before it sells. Days payable outstanding (DPO) is how long you take to pay suppliers.
The formula is CCC = DSO + DIO − DPO. You add the time cash is tied up in receivables and inventory, then subtract the time you get to hold onto cash by delaying supplier payments.
A worked example
Say customers take 45 days to pay (DSO), inventory sits 30 days (DIO), and you pay suppliers in 30 days (DPO). Your cycle is 45 + 30 − 30 = 45 days. For 45 days, on average, your cash is locked in the business before it returns.
Multiply your daily cost of sales by that cycle and you get a rough dollar figure for the working capital tied up — often a surprisingly large number.
What good looks like
There's no universal target — it depends heavily on your industry. Some businesses even run a negative cycle, collecting from customers before they pay suppliers, which means growth funds itself. For most, the goal is simply a shorter cycle than before and shorter than peers.
Track it over time. A cycle that's creeping up is quietly consuming cash, even if profit looks fine.
How to shorten it
Three levers: collect faster (lower DSO) with prompt invoicing, deposits, and follow-up; hold less stock or turn it faster (lower DIO); and take the full agreed terms with suppliers (higher DPO) without damaging relationships.
Even a few days off the cycle frees real cash. The free calculator below computes your cash conversion cycle and the cash tied up, and shows how much you'd free by collecting faster.
Questions
Can the cash conversion cycle be negative?
Yes, and it's a great position to be in. A negative cycle means you collect cash from customers before you have to pay your suppliers — so your suppliers effectively finance your growth. Businesses with upfront payment and long supplier terms (some retailers and subscription businesses) often run negative cycles, which is why they can grow without tying up their own cash.
How is the cash conversion cycle different from working capital?
Working capital is a dollar amount — current assets minus current liabilities, a snapshot of the cash cushion available to run the business. The cash conversion cycle is a time measure — how many days cash is tied up in operations. They're related: a longer cycle generally means you need more working capital, so shortening the cycle reduces the working capital your business must fund.